Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
tinh cua » trinh cua, tinh chat, tranh cua
sinh cua » manh cua, dinh cuu
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
sinh va » sinh vat, tinh va, dinh van

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - nhanh ((tinh cua) OR (((sinh cua) OR (sinh va)))) nhung cong dan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - nhanh ((tinh cua) or (((sinh cua) OR (sinh va)))) nhung cong dan toan cao~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - nhanh ((tinh cua) or (((sinh cua) OR (sinh va)))) nhung cong dan toan cao*.